generate_ha: on/off lighting becomes a light; brightness-only "lights" go to review instead of invalid YAML

Found on a real 1312-GA house, measured on all seven corpus projects.

B. Lighting on/off (1.001, lighting category) is emitted as a Home Assistant light with
   address + state_address, not a switch. The HA KNX light platform documents exactly
   that ("Simple light"). suggest.py already proposed light for these; the two engines
   disagreed. Without status it is reported as light_without_status.

D. A 5.001 lighting GA with no on/off GA in its zone produced a light with only
   brightness_address. Home Assistant requires address on a KNX light, so that YAML was
   invalid. 51 of them across six projects, mostly motion-detector parameters on 5.001.
   They now go to review as light_without_switch, and the brightness status is no longer
   consumed for an entity that does not exist, so it surfaces as not_mapped.

Corpus, before -> after: lights without address 51 -> 0 everywhere; no address lost from
YAML or review on any project; switch -> light moves of 220 (house), 205, 62, 43, 17, 10,
13. test_pipeline B1 fixture gains its on/off GAs (it encoded an invalid light) plus a
test for the review route. CHANGELOG also records fix A from 481bab0.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

tools/corpus_baseline.json

@@ -33,9 +33,9 @@
         "binary_sensor": 13,
         "climate": 6,
         "cover": 6,
-        "light": 12,
+        "light": 25,
         "sensor": 41,
-        "switch": 19
+        "switch": 6
       },
       "ha_review_items": 57,
       "suggestion_hints": {
@@ -87,11 +87,11 @@
         "climate": 3,
         "cover": 1,
         "expose": 1,
-        "light": 142,
+        "light": 180,
         "sensor": 55,
-        "switch": 85
+        "switch": 42
       },
-      "ha_review_items": 408,
+      "ha_review_items": 413,
       "suggestion_hints": {
         "channels": 229,
         "diagnostics_skipped": 2,
@@ -137,9 +137,9 @@
       "group_addresses": 167,
       "ha_entities": {
         "expose": 1,
-        "light": 12,
+        "light": 29,
         "sensor": 19,
-        "switch": 20
+        "switch": 3
       },
       "ha_review_items": 69,
       "suggestion_hints": {
@@ -194,11 +194,11 @@
         "binary_sensor": 5,
         "cover": 8,
         "expose": 1,
-        "light": 1,
+        "light": 10,
         "sensor": 87,
-        "switch": 58
+        "switch": 48
       },
-      "ha_review_items": 233,
+      "ha_review_items": 234,
       "suggestion_hints": {
         "channels": 135,
         "diagnostics_skipped": 8,
@@ -259,11 +259,11 @@
         "climate": 7,
         "cover": 7,
         "expose": 1,
-        "light": 15,
+        "light": 75,
         "sensor": 111,
-        "switch": 141
+        "switch": 79
       },
-      "ha_review_items": 324,
+      "ha_review_items": 326,
       "suggestion_hints": {
         "channels": 179,
         "diagnostics_skipped": 21,
@@ -324,9 +324,9 @@
         "climate": 16,
         "cover": 11,
         "expose": 1,
-        "light": 12,
+        "light": 232,
         "sensor": 159,
-        "switch": 315
+        "switch": 95
       },
       "ha_review_items": 598,
       "suggestion_hints": {
@@ -390,11 +390,11 @@
         "climate": 23,
         "cover": 40,
         "expose": 1,
-        "light": 250,
+        "light": 412,
         "sensor": 343,
-        "switch": 524
+        "switch": 319
       },
-      "ha_review_items": 1545,
+      "ha_review_items": 1589,
       "suggestion_hints": {
         "channels": 983,
         "diagnostics_skipped": 53,